I bet Brahms never imagined that someone will play this lullaby on a matchbox. br br If you like the video please share it. br Thank you. br br How to build a musical matchbox br What You'll Need: br Matchbox br Pencil br Ruler br X-Acto knife br 2 match size wood sticks, about 2" long br Elastic thread -- I used Gutermann Elastic 10m, or you can pull it out from an old sock. br Scissors br br How to build it: br 1. Draw 8 straight pencil lines across the matchbox about 316 inch apart. br 2. With the X-Acto knife make straight cuts on each side of the lines, about 316" deep. br 3. Glue the two wood sticks on top of the matchbox. br 4. Cut 8 elastic threads about 3" each and attach them to the matchbox by inserting each end to the cuts in the matchbox. br 5. Adjust the pitch (sound) of each thread by tightening or loosening it.